Design and Simulation of Direct Digital Frequency Synthesizer Based on Multisim Software
Shuai Zhang · Journal of Electric Power · 2012
In order to get the technology of frequency composition intuitively,direct digital frequency synthesizer(DDS) composed of phase accumulator,waveform store ROM,D/A converter and low pass filter etc.was studied.Based on Multisim software,a DDS outputs sine-waveform controlled by single chip 80C52 was designed and simulated.It can be clearly found that the frequency of output waveform changes with adjusting the referenced clock frequency f and the frequency control word K.It is convenient and easy to realize electronic circuits design and simulation without regard to lab equipments.This can be used for undergraduates' course design or the pre-design of traditional experiment to improve study effect and experiment efficiency.